. >> during the debate, he said he'd want more troops in iraq but he was caught on video saying it was unthinkable not to leave 20,000 troops in iraq. >> reporter: romney posed for pictures with police officers this morning before heading to nevada and colorado. both candidates are beginning an all out blitz of key battleground states in the final two weeks of the campaign. during last night's foreign policy debate, the candidates clashed over military sides and spending, russia and iran but their answers often drifted back to the economy. >> america must be strong. america must lead, and for that to happen, we have to strengthen our economy here at home. you can't have 23 million people struggling to get a job. >> both at home and abroad, he has proposed long and reckless policies. >> reporter: when it was over, a cbs news instant poll of uncommitted voters gave a clear victory to president obama, 53% to 23%. romney surprised some debate watch whers he didn't attack the president for the administration's handling on the deadly attack in benghazi, libya. paul ryan defended the strategy